lower(A𐐀) = a𐐨 (should be a𐐨)
upper(a𐐨) = A𐐀 (should be A𐐀)
lower(ΚΟΣΜΟΣ) = κοσμος (should be κοσμος)
upper(ß) = SS (should be SS)
upper(ʼn) = ʼN (should be ʼN)
upper(ǰ) = J̌ (should be J̌)
upper(ffi) = FFI (should be FFI)
lower(IJ) = ij (should be ij)